Electronic telephone switching system





3. IN A TELEPHONE SWITCHING SYSTEM IN COMBINATION A PLURALITY OF LINES,A PERMANENT MEMORY FOR STORING CONTROL PROGRAM SEQUENCES OF ORDERS, ATEMPORARY MEMORY FOR STORING CONTROL INFORMATION, COMMON CONTOL MEANSFOR CONTROLLING SAID SYSTEM, SAID PERMANENT MEMORY AND SAID TEMPORARYMEMORY IN RESPONSE TO INDIVIDUAL ORDERS RECEIVED FROM SAID PERMANENTMEMORY, MEANS RESPONSIVE TO EACH OF A PLURALITY OF ORDERS RECEIVED FROMSAID PERMANENT MEMORY FOR REGENERATING INFORMATION STORED IN SAIDTEMPORARY MEMORY, AND OTHER MEANS RESPONSIVE TO ORDERS FOR CONTROLLINGSAID TEMPORARY MEMORY FOR INTERRUPTING THE OPERATION OF SAIDREGENERATIVE MEANS.
 32. AN ELECTRONIC SWITCHING SYSTEM COMPRISING INCOMBINATION A PLURALITY OF LINES, A SWITCHING NETWORK CONNECTED THERETO,PERMANENT MEMORY FOR STORING SEQUENCES OF ORDERS FOR CONTROLLING SAIDSYSTEM AND SAID NETWORK, COMMON CONTROL MEANS INCLUDING AN ORDERREGISTER FOR RECEIVING ORDERS FROM SAID PERMANENT MEMORY, PARITY CHECKMEANS FOR CHECKING ORDERS ENTERED UPON SAID ORDER WORD REGISTER, MEANSRESPONSIVE TO A PREVIOUS ORDER AND TO AN ODD PARITY CHECK SAID PARITYCHECK MEANS FOR REORDERING THE ORDER ENTERED ON SAID ORDER WORD REGISTERFROM SAID PERMANENT MEMORY.
 39. AN ELECTRONIC TELEPHONE SWITCHING SYSTEMCOMPRISING IN COMBINATION, A PERMANENT MEMORY FOR STORING SEQUENCES OFORDERS FOR CONTROLLING SAID SYSTEM, COMMON CONTROL MEANS FOR SENDINGCONTROL SIGNALS TO SAID PERMANENT MEMORY, A CATHODE-RAY TUBE INCLUDED INSAID PERMANENT MEMORY, MEANS RESPONSIVE TO CONTROL SIGNALS RECEIVEDTHEREBY FOR CHANGING THE LOCATION OF THE BEAM IN SAID CATHODE-RAY TUBE,A TIMER CIRCUIT, MEANS OPERATING CONCURRENTLY WITH THE CHANGE INDIRECTION OF THE BEAM IN SAID CATHODE-RAY TUBE FOR RESTORING SAID TIMERCIRCUIT TO ITS INITIAL CONDITION AND MEANS RESPONSIVE TO THE OPERATIONOF SAID TIMING CIRCUIT FOR DIRECTING THE BEAM WITHIN SAID CATHODE-RAYTUBE TO A PREDETERMINED REST LOCATION.